PHP Crew: Collaboration? Login Backend?

Basically i've started something which i call 'Universal Login Backend'.

Simply, it works on an inclusive principle, you include a file, name some form inputs and presto, you have a working registration and login.

At the moment it handels some configuration, login, registration, sending activation email (configed/enabled in config), and holding the sessions, log out etc.

I was wondering if anyone is interested in developing it any further with me, i'll do all of it myselff i just dont have time to do 11ty billion features and i'm sure you guys can come up with some that you'd like to add.

At the end i'd like something distributable, configure, query to create the table, working login + registration.

I find login, user registration, and user management to be sort of a personal thing. I mean, if it comes with the package like say a shopping cart or forum, that's fine. But if I'm building my own app, I want 100% complete control over the login and user management. And at the same time, I need it to be as flexible and custom as my apps may require.

If you can swing this, then my hat is off to you.

I've built a user object which handles login, logout, registration, and registration editing. Being template driven, I have been able to swap the code over to other sites I've built. But even I'm not 100% sold my code is worthy to handle all my user management needs in the future. The cool part though is I've written it and I know what the thought process was when writing it so if I need to add features and functionality in the future, I know where and how to add it. This fact alone would keep me away from an open source project of this flavor. Its a real headache to sit for 2-4 hours trying to read someone else's code mess to figure out where and how I need to tweak it to add functionality.